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Ford Spark Plugs

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Why Spark Plugs Are Critical for Engine Ignition

A spark plug provides the essential spark needed to ignite the air-fuel mixture inside the engine’s cylinders. This small but powerful part ensures smooth starts, efficient combustion, and reliable acceleration. Worn or fouled plugs can lead to misfires, poor fuel economy, and reduced power output.

Replacing Spark Plugs in Your Ford

For a performance car like the Ford Mustang, high-quality spark plugs are vital to maintain factory-level horsepower and torque. OEM plugs are engineered for precise heat range, electrode design, and durability, making them ideal for both everyday driving and spirited performance.

Common Types of Spark Plugs

  • Copper spark plugs for cost-effective performance.
  • Platinum plugs for longer service intervals.
  • Double platinum plugs for high durability.
  • Iridium spark plugs for maximum efficiency.
  • Performance spark plugs for increased ignition power.
  • OEM-specific spark plugs for exact fitment.
  • Specialty plugs for turbocharged applications.

Best Practices in Maintaining Your Ignition System

  1. Inspect spark plugs every 30,000 miles.
  2. Check for fouling or electrode wear.
  3. Replace as recommended in the service manual.
  4. Use OEM plugs for accurate ignition timing.
  5. Pair replacements with a clean ignition system.

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Spark Plug

Part Number: AGSF-22F-1MX
Ford Ford
Other Names: sp523x
Replaces: 2S7Z-12405-AA, AGSF-22F-1M, AGSF-22F-CM, AGSF-22F-CMF6, SP-523
Description: 3.0L.
Fits:
  • Ford:
    • Escape
  • Mercury:
    • Mariner
MSRP $8.27
$5.41

Spark Plug

Part Number: AGSF-22F-SMX
Ford Ford
Other Names: sp459x
Replaces: AGSF-22F-SM, AGSF-22F-SMF4, AGSF-22F-SMF6, SP-459
Description: 3.0L.
Fits:
  • Lincoln:
    • LS
MSRP $7.93
$5.19

Spark Plug

Part Number: AGSF-32F-MX
Ford Ford
Other Names: sp432x
Replaces: AGSF-32-FS, AGSF-32-FSF6, AGSF-32F-M, AGSF-32F-MF4, AGSF-32F-MF6, AGSF-32F-SM, AGSF-32F-SMF6, AGSF-32F-SMX, AGSF-32P-PM, AGSF-32P-PMF4, AWSF-32E-E, AWSF-32E-EF4, AWSF-32F, AWSF-32F-F6, AWSF-32P-P, AWSF-32P-PF4, AWSF-32P-PF6, SP-432, SP-470, SP-470-X
Description: 4.6L. 5.0L. 2.5L. Vendor:motorcraft. Vendor #awsf 32-pp. 3.0L dohc. Vendor #awsf 32-f.
Fits:
  • Ford:
    • Contour,
    • Crown Victoria,
    • E-150 Econoline,
    • E-150 Econoline Club Wagon,
    • Expedition,
    • Explorer,
    • F-150,
    • F-250,
    • Mustang,
    • Ranger,
    • Taurus,
    • Thunderbird,
    • Windstar
  • Lincoln:
    • Continental,
    • LS,
    • Mark VIII,
    • Town Car
  • Mercury:
    • Cougar,
    • Grand Marquis,
    • Mountaineer,
    • Mystique,
    • Sable
MSRP $8.36
$5.47

Spark Plug

Part Number: AGSF-32N-X
Ford Ford
Other Names: sp413x
Replaces: AGSF-32N, SP-413
Description: With unleaded fuel. 3.0L, without ethanol.
Fits:
  • Ford:
    • Crown Victoria,
    • F-150,
    • Ranger
  • Lincoln:
    • Town Car
  • Mercury:
    • Grand Marquis
MSRP $7.49
$4.90

Spark Plug

Part Number: AGSF-32P-MX
Ford Ford
Other Names: sp493x
Replaces: AGSF-32P-M, AGSF-32P-MF4, AGSF-32P-MF6, AWSF-32P, AWSF-32P-F4, AWSF-32P-F6, SP-493
Description: 4.6, 5.4L, 4.6l. Without ngv. With unleaded fuel. Sohc, without ethanol. Vendor:motorcraft. Vendor #awsf 32-p. Optional. Standard.
Fits:
  • Ford:
    • Aerostar,
    • Crown Victoria,
    • E-150,
    • E-150 Econoline,
    • E-150 Econoline Club Wagon,
    • E-250,
    • Expedition,
    • Explorer,
    • F-150,
    • F-150 Heritage,
    • Mustang,
    • Probe,
    • Taurus,
    • Tempo
  • Lincoln:
    • Navigator,
    • Town Car
  • Mercury:
    • Grand Marquis,
    • Mountaineer,
    • Sable,
    • Topaz
MSRP $9.35
$5.60

Spark Plug

Part Number: AGSF-32W-M1X
Ford Ford
Other Names: sp417x
Replaces: AGSF-32W-M1, AGSF-32W-M1F4, SP-417
Fits:
  • Ford:
    • Escape
  • Mercury:
    • Mariner
MSRP $8.87
$5.81

Spark Plug

Part Number: ASF-32P-X
Ford Ford
Other Names: sp501x
Replaces: ASF-32P, ASF-32P-F4, SP-501
Fits:
  • Ford:
    • Bronco,
    • E-150 Econoline,
    • E-150 Econoline Club Wagon,
    • E-250 Econoline,
    • E-350 Econoline,
    • E-350 Econoline Club Wagon,
    • Econoline Super Duty,
    • F-150,
    • F-250,
    • F-250 HD,
    • F-350
MSRP $7.89
$5.16

Spark Plug

Part Number: 3C3Z-12A342-A
Ford Ford
Applications: 1999-07 SUPER DUTY.
Other Names: Spark Plug, zd31
Replaces: 3C3Z-12A342-AA, 3C3Z-12A342-AA2, ZD-12, ZD-12-2
Description: F350. 6.0l diesel. To 9/22/03. Excursion. 6.0l diesel.
Fits:
  • Ford:
    • Excursion,
    • F-250 Super Duty,
    • F-350 Super Duty,
    • F-450 Super Duty,
    • F-550 Super Duty
MSRP $16.69
$10.01

Spark Plug

Part Number: CYFS-12Y-PCTX
Ford Ford
Other Names: sp550x
Replaces: CYFS-12Y-2, CYFS-12Y-PC, CYFS-12Y-PCT, SP-527, SP-537, SP-550
Description: 2.0L turbo. 3.5L with turbo, 2017-20. 2.0L, 2015-18. 1.5L, 2020-22. 2.0, 2.3L turbo. From 05/31/2012.
Fits:
  • Ford:
    • Bronco Sport,
    • Edge,
    • Escape,
    • Explorer,
    • F-150,
    • Focus,
    • Fusion,
    • Mustang,
    • Special Service Police Sedan,
    • Taurus
  • Lincoln:
    • Corsair,
    • MKC,
    • MKT,
    • MKZ
MSRP $17.76
$10.65

Spark Plug

Part Number: CYFS-12Y-RX
Ford Ford
Other Names: sp545x
Replaces: CYFS-12Y-PC5, CYFS-12Y-R, SP-531, SP-545
Description: 2.5L, with Flex fuel. 2.5L phev.
Fits:
  • Ford:
    • Fusion
  • Lincoln:
    • Corsair
MSRP $17.40
$10.43

Spark Plug

Part Number: AGSF-12F-MX
Ford Ford
Other Names: sp495x
Replaces: AGSF-12E, AGSF-12F-M, AGSF-12F-M1, AGSF-12F-M1F4, AGSF-12F-M1X, AGSF-12F-MF6, AGSF-12P-PF6, SP-471, SP-471-X, SP-495
Description: 5.4L, with supercharger.
Fits:
  • Ford:
    • F-150,
    • F-150 Heritage,
    • F-250,
    • GT,
    • Mustang
MSRP $8.35
$5.46

Spark Plug

Part Number: AGSF-22F1-X
Ford Ford
Other Names: sp521x
Replaces: AGSF-22F1, SP-521
Description: 6.8L. 5.4L. From 10/05/2009. To 10/05/2009.
Fits:
  • Ford:
    • E-150,
    • E-250,
    • E-350 Super Duty,
    • E-450 Super Duty
MSRP $8.31
$5.44

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